Center stop motion for looms



Sept. 23; 1924-. V 1',so9,e14

'5. H. RYON CENTER STOP MOTION FOR LOOMS Filed Oct. 30, 1922 Patented Sept. 23, 192.4.

UNITED STATES PATENT OFFICE.

EPPA H. RYON, OF WALTI-IAM, MASSACHUSETTS, ASSIGNOR TO OR-OMPTON & KNOWLES I LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSA- CI-IUSETTS.

Application filed October 30, 1922. Serial No. 597,698.

T 0 all to hem it may concern:

Be it known that I, EPPA H. RYoN, a citizen of the United States. residing at VValtham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Center Stop Motion for Looms, of which the following is a specification.

This invention relates to a center stop motion for looms, of the type shown in the prior patent to Gagnon No. 1,369,417, issued February 22, 1921. In this patent mechanism is disclosed by which a center filling fork may effectively operate to release a brake rod or other loom stopping device.

It is the general object of my invention to improve the mechanism therein shown, obviating certain defects thereof, and rendering the mechanism more reliable and effective in action and less liable to injury or dis lacement. l

ith this general object in view, my invention relates more specifically to certain arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a side elevation of parts of a loom embodying my improvements;

Fig. 2 is a sectional plan view with certain parts omitted, taken along the line 22 in Fig. 1;

Fig. 3 is an enlarged plan view of my improved releasing device, and

Fig. 4 is a side elevation looking in the direction of the arrow 4 in Fig. 3.

Referring to the drawings, I have shown a loom frame 10 on which is pivotally mounted the usual lay 11 provided with a center filling fork 12. The filling fork is connected to an engaging device or dagger 13 mounted on the lay and movable into position for engagement with the end of a lever 14 pivoted at 15 on a fixed bracket 16. A stud 17 on the side of the lever 14 engages an arm 18 of a bell crank 19. An upwardly projecting arm 20 of the bell crank engages an arm of a second bell crank 21 mounted on a pivot 22 fixed on' the loom frame 10.

A rod or wire 24 is pivotally connected at one end to the second arm of the bell crank 21 and is slidable crosswise of the loom in a fixed bearing 25. A spring 26 is disposedbetween thebearing andacollar 27 on the rod 24 and acts to move the rod to the right and to hold the lever 14 against a stop 28 (Fig. 1) and in position for engagement by the dagger 13. j

The rod 24 is provided with a head 30 which is pivotally connected to an arm 31 mounted to swing on a stud 32 fixed in a bracket or casting 33 secured to the loom frame 10.

A bar 35 is vertically slidable in an opening 33 in the bracket 33 and is connected at its lower end to a brake lever, not shown, or to any other suitable loom stopping devices. The bar 35 is provided with a notch 36 which engages a shoulder 37 on the bracket 33 when the bar 35 is depressed, the parts being held in yielding engagement by a spring 38 on the rear side of the bar 35. A spring 39 on the bar 35 acts to move the bar yieldingly upward.

Upon failure of filling, the center filling fork 12 is unobstructed in its downward movement and permits the dagger 13 to move into position to engage the lever 14 and to force the lever forward. ment depresses the arm 18 of the bell crank 19 and turns the bell crank 21 in a direction to draw the rod 24 to the left against the tension of the spring 26. This movement in turn causes the arm 31 to be moved on its pivot from the position shown in full lines in Fig. 3 to that shown in dotted lines, moving the head 30 rearwardly and disengaging the bar 35 from the latch or shoulder 37 by which it is held in depressed position.

The swinging movement of the head 30 possesses important advantages over the sliding movement of the cam plate 32 in the Gagnon construction. The parts move more smoothly and easily and are more firmly supported in operative position. Furthermore, the head 30 is not subject to engagement by the notch 36 as the bar rises, a disadvantage found to exist with the previous construction, if the cam member was rocked slightly by the upward movement of the released bar.

The arm 31 is so engaged between the ears of the head 30 that it effectually prevents such angular movement of the head.

If longitudinal adjustment of the head is desired, this may be accomplished by removing the stud or bolt 32 and rotating the head 30 and arm 31 as a unit on the threaded end of the rod 24. This adjustment is Such moveeasily made, even with the warp and woven cloth in place in the loom. As the axis of the stud 32 is substantially parallel to the line of movement of the bar 35, any slight play or wear between the head stud 32 and the arm 31 is immaterial, as the coacting parts maintain their angular relation undisturbed.

The mechanism herein shown constitutes an improved releasing device having an extremely smooth and easy motion and in which no parts are subject to excessive strain.

Having thus described my invention, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what I claim is 1. In a loom having a center filling fork, loom stopping mechanism including a bar yieldingly movable longitudinally, and means to latch said bar in inoperative position, in combination, a releasing mechanism comprising a rod extending crosswise of the loom, an arm mounted to swing, a releasing member connected to said rod and pivotally supported on said arm, said member being disposed adjacent said bar, means to move said member yieldingly to inoperative position, and means rendered operative by said center filling fork effective to move said rod endwise and to thereby swing said member on said arm toward said bar to unlateh said bar and release said loom stopping mechanism.

2. In a loom having a center filling fork, loom stopping mechanism including a bar yieldingly movable longitudinally, and means to latch said bar in inoperative position, in combination, a releasing mechanism comprising a rod extending crosswise of the loom, a head threaded on the end of said rod and longitudinally adjustable by angular movement thereon, and means to hold said head from angular movement after adj ustment and to move said head transversely towards said bar to unlatch said bar and release said loom stopping mechanism when said rod is moved longitudinally in said loom.

In testimony whereof I have hereunto afiixed my signature.

EPPA H. RYON 

